G.f. satisfies: A(x) = 1 + x/A(-x*A(x)^6)^2.

Terms

a(0) =1a(1) =1a(2) =2a(3) =11a(4) =56a(5) =401a(6) =2960a(7) =23909a(8) =199324a(9) =1704937a(10) =14871560a(11) =131002444a(12) =1162055526a(13) =10330588405a(14) =91813523884a(15) =814261196562